Test ID: PHENB
CPT code: 80184
LOINC: 3948-7
Specimen Type: SERUM OR PLASMA
Frequency: Setup: Mon-Fri; TAT <24hrs
Instructions: 0.3mL serum Red nongel or plasma from green or lavender top tube. May be random or trough (just prior to next dose).
Text: Monitor therapeutic level; evaluate toxicity. Phenobarbital is used to
control seizures, to relieve anxiety, and is also used to prevent
withdrawal symptoms in people who are dependent on another barbiturate.
Methodology: Solid Phase competitive chemiluminescent enzyme immunoassay